DFG Invisible Fence®️ Compatible R21 & R51 Dog Collar Battery (Perimeter Technologies®️)

*Ships ONLY within the United States*  


Each battery will last as long or longer the original Invisible Fence®️ Brand PowerCap®️  batteries. Compatible with all Invisible Fence®️ Brand R21, R51 and MicroLite®️  electronic dog fence receiver collars. The battery design was approved by the chief engineer at the Invisible Fence®️ Company and are manufactured in a state of the art facility in Pennsylvania under his supervision.

3-volt lithium battery for the Invisible Fence brand for half the price.


  • 0.25 lb
  • Available
  • Ships within 1-3 days